DieselNet

DieselNet—The prime internet information service on engine and emission technologies, emission & fuel quality standards, and industry news.

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A summary of the technical sessions from the 47th International Vienna Motor Symposium held on April 22-24 in Vienna, Austria, https://t.co/fzQB5WjmXF

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A summary of the technical sessions on engine and emission technologies from the WCX SAE Congress held on April 14-16 in Detroit, Michigan https://t.co/SFm7t2GGZE

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The US EPA has repealed the 2009 GHG Endangerment Finding and all federal GHG emission standards for vehicles and engines of model years 2012 to 2027 and beyond, https://t.co/339GMjSJwS

[DOJ Environment and Natural Resources Division @DOJEnvironment]

Today, @TheJusticeDept is exercising its enforcement discretion to no longer pursue criminal charges under the Clean Air Act based on allegations of tampering with onboard diagnostic devices in motor vehicles.

[DieselNet @dieselnetcom]

US NHTSA issued a notice of proposed rulemaking to relax the existing CAFE standards for MY 2022-2031 light-duty vehicles. The proposal would also eliminate the CAFE credit trading program, which provided a de facto subsidy for EV vehicle makers, https://t.co/n67hmd1ulm

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Canada and Alberta signed an MOU to drop the oil and gas emission cap and to develop a new bitumen pipeline through northern British Columbia with “a route that increases export access to Asian markets as a priority” https://t.co/cArhQADhUj

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China has unveiled critical details about a ‘revolutionary’ cargo ship under development—a 14,000 TEU container vessel that will be the world’s first ship powered by a nuclear, thorium-fueled reactor, https://t.co/FORSYPHfWd

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IMO’s MEPC adjourned its discussion on the IMO Net-Zero Framework for one year. The Net-Zero Framework would regulate carbon intensity of fuel used by ships by implementing a global GHG emissions pricing mechanism, https://t.co/gG3gUAxd7G

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US DOJ has filed two complaints in federal courts against California regarding CARB enforcement of preempted emissions standards through the Clean Truck Partnership with heavy-duty truck manufacturers, https://t.co/nIfVfJEFhq

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US EPA issues revised DEF guidance for diesel vehicles with SCR systems, relaxing the ‘inducement’ requirements—such as vehicle speed and/or torque derates—that must be applied when the vehicle is operated without DEF, https://t.co/lCik5n0rjg

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The Energy Institute released the 2025 edition of the Statistical Review of World Energy (previously published by BP) presenting global data on fossil and renewable energy as well as key minerals for 2024, https://t.co/EGXbCxU7HD

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A summary of the technical sessions from the 31st CIMAC World Congress held in Zurich, Switzerland on May 19-23, 2025, https://t.co/02TSTXYIMy

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NHTSA published a rule stating that the Biden administration ignored statutory requirements adopting current CAFE standards. While the rule does not change existing CAFE standards, it sets the framework for the rulemaking process for replacement standards.
https://t.co/ylOi6dUiD9

[DieselNet @dieselnetcom]

A summary of the technical sessions from the 46th International Vienna Motor Symposium held May 14-16, 2025, for your reading pleasure!
https://t.co/2xHOZSJhfZ

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California has settled with a group of states led by Nebraska to repeal the Advanced Clean Fleets (ACF) regulation and not to enforce the 2036 100% ZEV requirement, https://t.co/U5MkbncVp6

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A summary of the technical sessions from the SAE WCX 2025 Congress held on April 8-10 in Detroit. Happy Reading! https://t.co/RZZ5wfztb9

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Cummins announced the B6.7 Octane gasoline engine—Cummins’ first advancement into the gasoline market. The gasoline engine, while less powerful than diesel, avoids costly DPF/SCR aftertreatment, avoids DEF, and makes 2027 emission compliance much easier. https://t.co/L8Ihkl8dZK

[DieselNet @dieselnetcom]

The California Air Resources Board withdrew its requests for US EPA waivers for the Advanced Clean Fleets (ACF) rule and the In-Use Locomotive regulation. The decision apparently came in anticipation of push-back from the Trump administration, https://t.co/FUCuDQhUdL

[DieselNet @dieselnetcom]

The EU has updated ambient air quality standards, effective from 2030. Under the new rules, member states must also monitor ambient concentrations of ultrafine particles (UFP) through the measurement of PN concentrations and size distributions, https://t.co/sIckNjDYav

[DieselNet @dieselnetcom]

EU registrations of new battery electric vehicles declined by 39% in August, year-over-year. In Germany, BEV sales declined by 69%. As EV sales decline, ACEA is calling on the European Commission for urgent relief measures for EU CO2 targets. https://t.co/lMlZpo2PXz